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By Mathematics Mcqs No Comments

(0.9 * 0.9 – 0.8 * 0.8)/1.7 = _________?

A. 0.1
B. 0.2
C. 0.3
D. 0.4

Explanation:

As numerator is of the form a2 – b2 = (a + b) (a – b), so the given expression simplifying becomes

(0.92 – 0.82)/(0.9 + 0.8) (0.9 + 0.8) (0.9 – 0.8)/0.9 + 0.8 = 0.1

Related Mcqs:

  1. 5/8 * 2(2/5 – 5/4) / 1 1/4  = _________?

    A. 1/5
    B. 4/5
    C. 6/5
    D. 8/5

  2. [8 + {(21 * √9/441 – 1 /5 of 60% – 1/5) * 625 + 7} ÷ 4] = _________?

    A. 10
    B. 15
    C. 7
    D. 16

  3. 30.9 * 3000 – 10.1 * 1100 + 8298 – 4302 = _________?

    A. 80000
    B. 90000
    C. 105000
    D. 85000

  4. 36 * 48 ÷ 64 + 36 ÷ 12 = _________?

    A. 12
    B. 18
    C. 20
    D. 30

  5. 105 * 99 * 299 = _________?

    A. 785600
    B. 315000
    C. 845000
    D. 442000

  6. 2003 * 2004 – 2001 * 2002 = _________?

    A. 8000
    B. 8010
    C. 8020
    D. 8040

  7. (332% of 2113) / 42 = _________?

    A. 167
    B. 154
    C. 162
    D. 181

  8. 4 * 0.4 * 0.04 * 0.004 = _________?

    A. 0.0256
    B. 0.00256
    C. 0.000256
    D. 0.0000256

  9. [(62.25/2.5) + (12.5/0.5)] / [(0.75 * 9) + (3.5 * 3.5)] = _________?

    A. 1 17/38
    B. 1 38/17
    C. 2 38/17
    D. None of these

  10. (22 * 495 + 891 * 44) / (33 * 176 + 55 * 264) = _________?

    A. 1
    B. 2
    C. 69/28
    D. 66/17

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